Browned Butter Rice Krispies Easter Egg Treats. I use s whole stick of salted butter, browned just right before adding a 10 oz bag of mini marshmallows. Melt together and add 6 cups Rice Krispies and mix well. Using a plastic egg form, push treats into each side and smoosh together. Roll in sprinkles. Can add a chocolate treat in the middle if you'd like.